Hamburger



FIG. 1 is a perspective view of a hamburger showing my new design;

FIG. 2 is a front elevational view thereof, the rear side being a mirror image;

FIG. 3 is a left side elevational view thereof, the right side being a mirror image;

FIG. 4 is a top plan view thereof;

FIG. 5 is a bottom plan view thereof; and,

FIG. 6 is an alternate perspective view thereof, with one segment shown removed for ease of illustration.

The broken lines shown in the drawings represent portions of the HAMBURGER that form no part of the claimed design. 

The ornamental design for a hamburger, as shown and described. 